baber/WOPTO huggingface dataset:
Patent GB-375247-A (GB)
Title: Improvements in or relating to gear cutting machines
IPC: B23F1/06
Filed: 1932-03-09
Abstract: 375,247. Gear-cutting. GLEASON WORKS, 1000, University Avenue, Rochester, New York, U.S.A.-(Assignees of Hill, M. H. ; 1000, University Avenue, Rochester, New York, U.S.A.) March 9, 1932, No. 7090. Convention date, March 14, 1931. [Class 83 (iii).] Attachments for shaping ; tools.-A gearcutting machine is provided with means, which may be embodied in an attachment for use on existing machines, for automatically chamfering the teeth as they are cut. In an application to a machine for roughing out curved bevel gear teeth, by means of a rotary annular face mill 24, the cutting mechanism is housed in a column 21 and the cutter is fed towards the work G mounted on a spindle in a head 22, and, on completion of a tooth, is withdrawn while the work is indexed. The indexing mechanism is operated from a cam 33 driven in timed relation with the feed mechanism and arranged to reciprocate a curved rail 35 connected by gearing (not shown) with the notched indexing plate 32. The cam 33 is timed so that the rail is oscillated to effect indexing while the cutter is clear of the blank. A support 40 is secured to the head 22 and is fitted with a reciprocatory slide 44 carrying an adjustable head 48 having a pivot pin 53 which carries a tool block 52 in which the tool 55 is secured by a screw 56. The tool, Fig. 8, is of trapezoidal section and presents a cutting edge 58, a portion 57 being milled away to clear the bottoms of the blank tooth spaces. An arm 60 on the tool block is held against an adjustable stud 62 by a spring 63 so that as the slide 44 reciprocates the tool swings about the point of engagement of the arm 60 with the stud 62 to give a swinging motion to the chamfering tool. The tool slide is withdrawn and is normally held in inoperative position against an abutment 105 by a spring 70. The slide is actuated by a connecting-rod 77 pivoted on a crank 80 mounted on a shaft 82 whose lower end is fitted with an arm 84 provided with a flatted pin 86. The rail 35 carries blocks 89, 91 the latter being provided with a cam block 95 coacting with the pin 86. When the rail 35 is moved to the left, Fig. 4, a bevelled surface on the cam engages the rounded side of the pin and the cam is depressed so that it can pass under the pin without actuating the arm 84. During this movement of the rail the indexing mechanism is actuated thus bringing a tooth which has just been cut into alignment with the chamfering tool. When the rail is reversed the flatted surface of the pin coacts with the cam 95 and the crank member 80 is thus actuated to operate the chamfering slide. After the pin has cleared the cam, the tool is returned by the spring 70. The cutter 24 is then again fed to cut a fresh tooth space in the block, the rail 35 being stationary during the feed of the cutter. The chamfering slide may be manually operated for setting up by means of a handle 109. The chamfering cut serves to remove the sharp tooth corners as shown at C, Fig. 12.
Patent GB-827442-A (GB)
Title: Glycerol fatty acid partial ester gels
IPC: A61K47/14
Filed: 1958-03-06
Abstract: A gel-like base for use as a carrier in making medicaments, consists of a glycerol fatty acid partial ester composition in which 10 to 90% by wt. of water is incorporated, the partial ester composition containing at least 75% of monoglycerides of fatty acids, preferably unsaturated, which contain at least 16 C atoms, and in which there is present not more than 10% of saturated fatty acid glycerides having more than 11 C atoms.  Mono-olein, mono-linolein, and monolinolenin are especially suitable, and are obtained from fatty oils, e.g. cottonseed, poppyseed or linseed oil.  The crude fatty acids obtained from the fatty oil are dissolved in acetone and chilled to separate out the major part of palmitic and other saturated higher fatty acids, and the resulting fatty acids, mainly oleic and linoleic acid, are then reacted with the required amount of glycerine or a tri-glyceride in the presence of an inter-esterification catalyst to form the monoglyceride.  This is separated by thin film centrifugal distillation under reduced pressure, as described in Specifications 682,625 and 682,626, [Group IV (b)].  The product containing 75 to 90% of monoglycerides is capable of absorbing up to 90% of water by mixing and heating to form a clear gel to which vitamins, hormones, or enzymes may be added.
Patent GB-327830-A (GB)
Title: Improvements in the manufacture of m-2-xylidine
Filed: 1929-03-05
Abstract: 327,830. Imperial Chemical Industries, Ltd., and Kenner, J. March 5, 1929. m-2-Xylidine is separated from the residual oil after the removal of 1 : 3-dimethyl-4-aminobenzene, and 1 : 4-dimethyl-2-aminobenzene from the mixture of isomeric xylidenes obtained from commerical xylene, by converting it into the nitrate. After treating the crude oil with sulphuric acid to remove the greater portion of the other isomers, the filtrate is either basified and treated with nitric acid, or directly treated with a soluble nitrate, the separated nitrate being then purified by crystallization from water and basified. In examples (1) the crude oil is treated with sulphuric acid, filtered, rendered alkaline, and nitric acid is added, the precipitate being then recrystallized; (2) the liquor remaining after sulphuric acid treatment, and filtering, is treated with solid sodium nitrate, and the precipitate purified.
Patent GB-1091546-A (GB)
Title: Series resonant rapper system
Inventor: BOURKE BERNARD JAMES
IPC: B03C3/76
Filed: 1965-02-19
Abstract: 1,091,546. Electrostatic precipitators. UNIVERSAL OIL PRODUCTS CO. Feb. 19, 1965 No. 7218/65. Heading B2J. In an electrically-operated rapping system for dislodging dust from the discharge or collecting electrodes of electrical dust precipitators and comprising rapping hammers H sequentially actuated through switches S1-S4 by solenoid coils R1-R4 furnished with alternating current from a supply circuit which is completed by a firing switch SP which is closed whenever one of the switches S1-S4 is closed, a capacitor RC having a capacitive reactance equal to or substantially equal to the inductive reactance of the individual solenoid coils is placed in the supply circuit. This provides a substantial increase in the current flowing in turn through each solenoid coil with corresponding increase in the intensity of impact of the associated hammer on its corresponding electrode. The supply voltage is applied at 3, 4 to lines 18, 19 and through lines 20-23, as the switches S1-S4 close in sequence, to relays RR1-RR4 energizing the coils R1-R4. The switches S1-S4 are operated by cams C1-C4 on a shaft 24 driven intermittently through a Geneva gear by a shaft 25 driven through reduction gearing by a variable speed motor energized by d.c. from a rectifier system Um 1 -Um 4  supplied with a.c. at 14, 16. The operation is as follows: The motor is energized and rotates continuously. When cam Cl closes switch S1 relay RR1 is closed setting up solenoid coil R1 for energization by the supply a.c. Immediately thereafter, a cam C5 on shaft 25 closes switch SP which establishes a circuit through a time relay RT and a load relay LR thereby energizing the load relay causing it to close and apply the supply a.c. through an adjustable rheostat RH and the capacitor RC to the solenoid coil Rl causing high current at high voltage to be forced through it obtaining a high intensity of impact of the associated hammer H. The timer relay RT then operates to break the circuit through load relay LR thereby de-energizing solenoid coil Rl. Due to continuous rotation of the motor solenoid coils R2-R4 are then energized in sequence. A rheostat RF controls the speed of the motor and hence the frequency of operation of the hammers. RS is a voltage surge limiting resistor. In a modification, Fig. 2 (not shown), the relays RR1-RR4 are omitted.
Patent GB-471333-A (GB)
Title: Improvements in or relating to the production of cold by the vaporization of liquid fuel in connection with internal combustion engines
IPC: B23Q5/32
Filed: 1936-03-10
Abstract: 471,333. Vaporizers. ELECTROLUX, Ltd. March 10, 1936, No. 7243. Convention date, March 12, 1935. [Class 7 (iii)] [Also in Group XIII] In the production of cold by the vaporization of liquid fuel passing to the suction port of a . compressor interposed between the carburetter and the engine cylinders of, e.g. an automobile, the vaporization is effected in the presence of combustion air. The vaporization may take place in a heat-insulated duct 16 disposed between the carburetter 13 and an air precooler 11 provided with open-ended tubes 14 and connected to the compressor 51 which discharges the air /fuel mixture to the engine. The precooled air passes through the duct 15 to the carburetter. In a modification, in which the vaporization takes place in a finned-duct 16, Fig. 2, a part of the air flowing through the tubes 14 to the carburetter 13 is byepassed through a duct 56 so as to pass over liquid fuel in a vessel 53 and thence through a duct 57 to the preheater 11.
Patent GB-538930-A (GB)
Title: Improvements in waterproofing plaster boards
IPC: C10G73/40
Filed: 1940-04-22
Abstract: 538,930. Floors and ceilings; compound slabs. MACDONALD, R..M. April 22, 1940, No. 7247. [Classes 20,(iv) and 87 (i)] [Also in Group VIII] Plaster boards are waterproofed by treatment with wax. The boards .may be immersed in or painted or sprayed with liquid paraffin wax or a hot wax emulsion, drained and dried by heating. A suitable emulsion is made by melting stearic acid in hot water, making alkaline with ammonia and adding paraffin wax while stirring. Acidity in the board may be neutralized by a preliminary treatment with ammonia vapour. The treated boards may be made in forming floors and ceilings. As shown, arched plaster boards 10 are secured by flanges 12 to a plane board 11 and the joints are covered by strips 16 of plaster board. Concrete 20, which may include reinforcing steel 19, is cast on the boards 10 to form the floor. The boards 11 may be perforated so as to drain liquid leaking into the space 22.
Patent GB-1528723-A (GB)
Title: 1-nitro-9-n-substituted aminoalkylamino-acridines their salts and a method of preparing same
IPC: C07D219/08
Filed: 1977-02-22
Abstract: 1528723 1-Nitro-9-N-alkylaminoalkylaminoacridines POLITECHNIKA GDANSKA 22 Feb 1977 [25 Feb 1976] 07288/77 Heading C2C Novel compounds of the Formula I wherein R is methyl, ethyl, propyl, isopropyl, butyl, isobutyl, isopentyl, benzyl or cyclohexyl and n is 2 or 3 and acid addition salts thereof, may be prepared by reacting 1-nitro-9-phenoxy-acridine with a corresponding N-substituted amino-C 2  or C 3  alkylamine. 1-Nitro-phenoxyacridine is prepared by reacting 1-nitro-9-chloroacridine or (1-nitroacridyl-9)-pyridinium chloride with phenol. The product can be reacted in situ to form a Compound I. Pharmaceutical compositions of the Compound I with the usual excipients show antineoplastic and spasmolytic activity when administered parenterally.
Patent GB-495565-A (GB)
Title: Improvements in alternating current rectifying arrangements comprising gaseous discharge valves
IPC: H02M7/15
Filed: 1937-03-12
Abstract: 495,565. Rectifying alternating currents. BRITISH THOMSON - HOUSTON CO., Ltd. March 12, 1937, No. 7328. Convention date, March 12, 1936. [Class 38 (ii)] In a polyphase rectifying arrangement comprising controlled discharge valves 3 .... 8 connected so that two valves must be rendered conductive simultaneously for current to flow igniting potentials are applied to the control electrodes 11 twice per cycle at intervals of 60 in order that the arrangement may operate when the load circuit 1 is predominantly capacitative and to extend the possible range of voltage control by phase displacement of the igniting potentials when the load is resistive. The igniting potentials are applied through transformers 19 .... 24 having two primaries, each of which is in series with a primary of another transformer. Each series-connected pair is energized in proper sequence by sequential discharge of condensers 55 normally maintained charged by auxiliary rectifiers 70 .... 75 and transformers 76. The discharge of the condensers 55 is controlled by auxiliary valves 46 .... 51 whose grid circuits are fed through transformers 64 .... 69 and a common phase-shifting transformer 63 from the A.C. network 2. A time-lag switch 78 is included in the anode circuits of the rectifiers 70 to ensure that the latter are not completed until the cathodes reach operating temperature.
Patent GB-196160-A (GB)
Title: Improvements in or relating to means for filtering blast furnace and other gases
IPC: C10K1/02
Filed: 1922-03-13
Abstract: 196,160. Brown & Co., Ltd., J., Grant, A. J., and Jones, D. G. March 13, 1922. Filtering.-Blast-furnaces and other gases are filtered on travelling sieves which carry a series of layers of granular or like filtering medium, one layer, which may be of finer material, being deposited on the next, and so on. As shown, a filter chamber c is interposed between a main delivery pipe a and a discharge pipe e, and an openwork belt d is carried through it on rollers. Hoppers m, n, o deliver coarse, medium, and fine siliceous grit &c. on to the belt, the finer layers on top. The grit &c. is automatically removed by the belt, and replaced by clean material; the used material is cleaned and sorted by graduated screens. Two or more filter chambers may be used alternatively or in succession. The belt may be replaced by an openwork revolving disc.
Patent GB-1456073-A (GB)
Title: Electrolytic cells
IPC: H01M10/39
Filed: 1974-02-18
Abstract: 1456073 Solid electrolyte cells NATIONAL RESEARCH DEVELOPMENT CORP 17 Feb 1975 [18 Feb 1974] 7369/74 Heading H1B An electrolytic cell comprises a lithium or lithium alloy anode 16, a ceramic electrolyte 20, a cathode 22 formed of a chalcogen and a lithium ion containing salt 18 between the anode and the electrolyte. The chalcogen is preferably sulphur and the electrolyte, which forms a container for the salt 18, is #-alumina, #<SP>11</SP>-alumina, Li 4 SiO 4  or Li 4 TiO 4 . The lithium anode is contained in an inverted tube 14 and the salt 18 is a mixture of LiCl, LiI and KI. A cylinder 24 of carbon felt forms the cathode current collector and the tube 14 is coated with insulating material such as alumina to prevent lithium collecting on its surface during recharging. The cell is electrically heated to a temperature of about 350‹ C. and the salt 18 may be immobilized by a filler such as calcium zirconate.
Patent GB-1365589-A (GB)
Title: Epoxidation of unsaturated compounds
IPC: B01J31/18
Filed: 1972-02-17
Abstract: 1365589 Epoxidation of unsaturated compounds SOC NATIONALE DES PETROLES D'AQUITAINE 17 Feb 1972 [18 Feb 1971 2 April 1971] 7431/72 Heading C2C Olefinically unsaturated hydrocarbons are epoxidized in the liquid phase with a hydroperoxide and a catalyst comprising an organometallic chelate complex of a Group V or VI metal oxide and a nitrogenous bidendatechelate forming ligand. Cyclohexene and propylene are epoxidized in examples using catalysts from molybdenum, vanadium and tungsten oxides. The chelate forming ligand may be 8- hydroxy quinoline, substituted mono- or dicarboxylic pyridine acids, compounds of formula where R 1  is an alkyl radical or aromatic nucleus, R 2  is hydrogen, alkyl radical or aromatic nucleus, e.g. benzohydroxamic or salicylhydroxamic acids, substituted or unsubstituted hexahydrobenzo-hydroxamic acid, N-benzoyl N- phenyl hydroxylamine and N-furfuryl N-phenyl hydroxylamine. The reaction mixture may include solvents and the catalyst may be activated by reacting separately with a solution of hydroperoxide before being added to the olefine.
Patent GB-219047-A (GB)
Title: Improvements in or relating to machines for preparing, spinning, doubling, winding and reeling cotton
IPC: D01H1/20
Filed: 1923-03-15
Abstract: 219,047. Hetherington & Sons, Ltd., J., Barke, J. G., and Hardman, F. March 15, 1923. Combing-machines- Relates to means for driving double-sided combing-machines, by using only one line-shaft pulley. One, two, three or four pulleys are mounted on the main shaft of one side of the machine and are connected by chain or sprocket gearing with the main-shaft of the other side. The second shaft is operated through clutches if independent driving is necessary, or independent driving may be effected without clutch mechanism when more than one pulley is used. In the arrangement shown in Fig. 2, the cylinder shafts 2. 3 of a double-sided combing-machine are driven by a single pulley 4 which is connected by cone clutches 5, 6, or band clutches, with the shaft 2 and with a chain wheel 7 connected to a chain wheel 9 geared with the shaft 3. The pulley 4 carries the chain-wheel 4<c> for driving the fan. Wide and narrow loose pulleys 29, 28, Fig. 6, may be mounted on one shaft, together with a clutch 32, and by operating the belt and the clutch either or both of the shafts may be driven. In the arrangement shown in Fig. 8 a narrow fast pulley 35 is mounted on one shaft and a wide loose pulley 34 connected by chain-gearing with the other shaft. One or the other of the shafts may be operated by moving the belt entirely on the pulley 34, or on the pulley 35 and partly on the ordinary loose pulley 33, or both may be operated or stopped by moving the belt on the pulley 35 and partly on the pulley 34 or entirely on the pulley 33. Four pulleys 39 - - 42, Fig. 10, and two belts may be used 39, 41, being loose pulleys and 42, 41 being respectively keyed on one shaft and connected by chain-gearing with the other.
Patent GB-410590-A (GB)
Title: Improvements in paper bags
IPC: B65D33/14
Filed: 1933-03-13
Abstract: 410,590. Paper bags. BIBBY & BARON, Ltd., New Bridge Works, Bury, and PARKER, G., West Royd, Bury New Road, Whitefield, both in Lancashire. March 13, 1933, No. 7502. [Class 94 (ii).] A paper bag, hand or machine made, is provided with one or more tabs a<1> stamped or cut out of the preceding tailend of a paper tube, which tail end is folded and adhered to produce the bottom, the tabs of a batch of such bags being punctured for stringing at b.
Patent GB-1489072-A (GB)
Title: Intrinsically safe systems
IPC: H04B10/80
Filed: 1975-02-17
Abstract: 1489072 Optical isolator INDUSTRIAL CONTROL SERVICES Ltd 17 Feb 1975 [19 Feb 1974] 7522/74 Heading G1A [Also in Division H2] In an optical isolator arrangement signals from one electronic circuit on a board 20 are transmitted to another electronic circuit on a board 10 by way of a light emitting diode P.E.D. at one end of a bore 32 in a metal block 30 and a photo-transistor PT at the other end. The brass block may be connected to the earths of the two different circuits. The bore may contain a fibre optics cable. The circuits 10, 20 can be mounted on the same cicuit board with the block 30 positioned accordingly. The circuit containing the light emitting diode may also contain a temperature transducer whose contacts are closed so long as a prescribed safe temperature is not exceeded. If the safe temperature is exceeded the contacts are opened to turn off the light emitting diode. Examples, Figs. 1, 3 and 4 (not shown) of several circuits are disclosed.
Patent GB-548745-A (GB)
Title: Altimeter and safe landing indicator instrument for aircraft
IPC: G01L7/00
Filed: 1941-06-16
Abstract: 548,745. Altimeters. KELVIN BOTTOMLEY & BAIRD, Ltd., and RICHMOND, P. H. June 16, 1941, No. 7583. [Class 106 (ii)] An altimeter is combined with a stop-watch so that by keeping the needles of the two instruments in register the correct speed of descent for landing is attained. The housing 1 encloses a stop-watch 9 having a pointer 5 and an altimeter comprising a capsule 10 connected by a pipe to a capacity chamber 11 communicating by a pipe with a valve which has a leak to the inside of the casing. The latter communicates with the atmosphere through a connection 3. The movements of the capsule 10 are transmitted to a hand 4. A height scale 6 and a concentric seconds scale 7 are provided. In use, the altimeter is normally out of action, but when the machine approaches a landmark near the landing field, the machine comes down to five hundred feet and the valve is closed by turning the button 15 and the stopwatch started by operating the knob 20, the pointers being brought into alignment. They are kept in alignment until the landing is effected.
Patent GB-769408-A (GB)
Title: Improvements in and relating to articles of furniture such as trays for clamping to chairs and the like
IPC: A47C7/68
Filed: 1954-03-16
Abstract: 769,408. Tables. ANECKI, J. L. March 15, 1955 [March 16, 1954; June 9, 1954], Nos. 7654/54 and 16975/54. Class 52 (3). A tray with working surface 1 has members 3, 4 by which it may be clamped to the arm of a chair, the member 3 being hinged to a cross bearer 6 and the member 4 being hinged to a slide 8 working in grooves 5 in the frame 2 enclosing the top 1 and tension springs 7 urging the members 3, 4 together. The members 3, 4 are shaped to interengage when collapsed inwards so that the edge 3a of member 3 underlies member 4 and the tip 4a of the latter underlies the side 3b of member 3 so that the members are kept clamped in their collapsed position by the springs. Member 3 may be pivotable about an axis normal to the tray surface or there may be sufficient play in the grooves to allow member 4 to pivot about such an axis to allow for lack of parallelism in the chair arm.
Patent GB-595278-A (GB)
Title: Improvements in or relating to method of and apparatus for removing ice from surfaces subjected to icing conditions
IPC: C09K3/18
Filed: 1945-03-27
Abstract: The adhesion of ice to the surfaces of common solid materials such as metal, stone and particularly rubber, normally subjected to icing conditions, is reduced by associating with at least the surface of said material an organo-silicon halide or a liquid polymeric silicone.  The halide may be applied as a solution in a volatile solvent such as a hydrocarbon or a halogen-substituted hydrocarbon, e.g., a 50 per cent. by weight solution of dimethyl silicon dichloride in benzene is brushed on to the surface of a rubber inflatable de-icing device such as is fitted to aircraft wings, and the solvent allowed to evaporate.  The polymeric silicone may be prepared by the hydrolysis of a mixture of dimethyl silicon dichloride and monomethyl silicon trichloride and subsequent polymerisation to the liquid stage, e.g., a liquid polymeric silicone having an initial boiling point of about 165 DEG C. and prepared from these substances is applied directly to the surface of vulcanised neoprene inflatable elements of a deicing device.  Specification 542,655, [Group IV], and U.S.A. Specification 2,380,995 are referred to.
Patent GB-471238-A (GB)
Title: Improvements in or relating to grips for handles of golf clubs, cricket bats, hockey sticks or other shaft-like bodies
IPC: A63B53/14
Filed: 1937-03-16
Abstract: 471,238. Handles. FLETCHER, H. L. March 16,1937, No. 7736. [Class 61 (i)] [Also in Group XV] A hand - grip for a golf club, hockey stick, cricket bat, or other shaft-like body, is provided with one or more helical ridges, the helices being righthand over one portion of the shaft and left-hand over another. The hand-grip may be formed by winding a specially ridged tape on the shaft in the normal manner, the ridges being arranged so as to form the required helices, or, alternatively, the grip may. be made in tubular form. The ridges may be irregular or discontinuous and a stop 7 may be located at the upper end of the handle.